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8fe0d1bacd
- generic isoSurfaceBase. Provides simpler cell-cut detection and various functions that can be used for iso-surfaces or when preparing prefiltered input for iso-surfaces. - rudimentary runtime selection ENH: isoSurface Cell/Topo uses the isoSurfaceBase infrastructure - simpler cell cut detection, common routines - ensure that tetMatcher is only called once per cell ENH: use indirect patch during edge erosion - lower overhead, allows backtracking (future) if needed
318 lines
8.8 KiB
C++
318 lines
8.8 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2019-2020 OpenCFD Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::isoSurfaceBase
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Description
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Low-level components common to various iso-surface algorithms.
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Note
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The interpolation samplers currently require a volField for the cell
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values. This is largely a restriction imposed by the point algorithm
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and may be revised in the future.
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SourceFiles
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isoSurfaceBase.C
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isoSurfaceBaseNew.C
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\*---------------------------------------------------------------------------*/
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#ifndef isoSurfaceBase_H
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#define isoSurfaceBase_H
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#include "isoSurfaceParams.H"
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#include "bitSet.H"
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#include "scalarField.H"
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#include "volumeType.H"
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#include "volFieldsFwd.H"
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#include "MeshedSurface.H"
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#include "MeshedSurfacesFwd.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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// Forward Declarations
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class polyMesh;
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class tetCell;
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/*---------------------------------------------------------------------------*\
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Class isoSurfaceBase Declaration
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\*---------------------------------------------------------------------------*/
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class isoSurfaceBase
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:
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public meshedSurface,
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public isoSurfaceParams
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{
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public:
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// Data Types
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//- The type of cell/face cuts
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enum cutType : uint8_t
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{
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NOTCUT = 0, //!< Not cut
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CUT = 0x1, //!< Normal cut
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TETCUT = 0x2, //!< Cell cut is a tet
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SPHERE = 0x4, //!< All edges to cell centre cut
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ANYCUT = 0xF, //!< Any cut type (bitmask)
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UNVISITED = 0x10, //!< Unvisited
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BLOCKED = 0x20, //!< Blocked (never cut)
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SPECIAL = 0xF0 //!< Bitmask for specials
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};
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protected:
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// Protected typedefs for convenience
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typedef meshedSurface Mesh;
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// Typedef for code transition
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typedef cutType cellCutType;
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// Protected Data
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//- Reference to mesh
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const polyMesh& mesh_;
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//- Cell values
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const scalarField& cVals_;
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//- Point values
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const scalarField& pVals_;
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//- Iso value
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const scalar iso_;
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// Controls, restrictions
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//- Optional boundary faces to ignore.
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// Eg, Used to exclude cyclicACMI (since duplicate faces)
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bitSet ignoreBoundaryFaces_;
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// Sampling information
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//- For every face, the original cell in mesh
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labelList meshCells_;
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// Protected Member Functions
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//- Check for tet values above/below given (iso) value
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// Result encoded as a single integer
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inline static constexpr int getTetCutIndex
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(
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const scalar a,
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const scalar b,
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const scalar c,
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const scalar d,
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const scalar isoval
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) noexcept
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{
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return
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(
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(a < isoval ? 1 : 0)
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| (b < isoval ? 2 : 0)
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| (c < isoval ? 4 : 0)
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| (d < isoval ? 8 : 0)
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);
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}
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//- Count the number of cuts matching the mask type
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// Checks as bitmask or as zero.
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static label countCutType
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(
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const UList<cutType>& cuts,
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const uint8_t maskValue
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);
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//- Dummy templated interpolate method
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template<class Type>
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tmp<Field<Type>> interpolateTemplate
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(
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const GeometricField<Type, fvPatchField, volMesh>& cellValues,
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const Field<Type>& pointValues
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) const
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{
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return nullptr;
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}
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//- No copy construct
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isoSurfaceBase(const isoSurfaceBase&) = delete;
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//- No copy assignment
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void operator=(const isoSurfaceBase&) = delete;
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public:
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// Typedefs for code transition
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using isoSurfaceParams::algorithmType;
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using isoSurfaceParams::filterType;
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// Constructors
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//- Construct with mesh, cell/point values and iso-value
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isoSurfaceBase
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(
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const polyMesh& mesh,
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const scalarField& cellValues,
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const scalarField& pointValues,
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const scalar iso,
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const isoSurfaceParams& params = isoSurfaceParams()
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);
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// Selector
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//- Create for specified algorithm type
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// Currently uses hard-code lookups based in isoSurfaceParams
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static autoPtr<isoSurfaceBase> New
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(
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const isoSurfaceParams& params,
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const volScalarField& cellValues,
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const scalarField& pointValues,
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const scalar iso,
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const bitSet& ignoreCells = bitSet()
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);
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// Member Functions
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// Access, Edit
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//- The mesh for which the iso-surface is associated
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const polyMesh& mesh() const noexcept
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{
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return mesh_;
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}
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//- The mesh cell values used for creating the iso-surface
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const scalarField& cellValues() const noexcept
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{
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return cVals_;
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}
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//- The mesh point values used for creating the iso-surface
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const scalarField& pointValues() const noexcept
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{
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return pVals_;
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}
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//- The iso-value associated with the surface
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scalar isoValue() const noexcept
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{
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return iso_;
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}
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//- For each face, the original cell in mesh
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const labelList& meshCells() const noexcept
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{
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return meshCells_;
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}
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//- For each face, the original cell in mesh
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labelList& meshCells() noexcept
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{
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return meshCells_;
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}
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// Helpers
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//- Restore non-BLOCKED state to an UNVISITED state
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static void resetCuts(UList<cutType>& cuts);
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//- Mark ignoreCells as BLOCKED
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label blockCells
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UList<cutType>& cuts,
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const bitSet& ignoreCells
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) const;
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//- Mark cells inside/outside a (valid) bound box as BLOCKED
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// The volType is INSIDE or OUTSIDE only
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label blockCells
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(
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UList<cutType>& cuts,
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const boundBox& bb,
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const volumeType::type volType
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) const;
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// Cutting
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//- Set ignoreBoundaryFaces to ignore cyclics (cyclicACMI)
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void ignoreCyclics();
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//- Populate a list of candidate cell cuts using getCellCutType()
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label calcCellCuts(List<cutType>& cuts) const;
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//- Determine face cut for an individual face
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cutType getFaceCutType(const label facei) const;
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//- Cell cut for an individual cell, with special handling
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//- for TETCUT and SPHERE cuts
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cutType getCellCutType(const label celli) const;
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// Sampling
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#undef declareIsoSurfaceInterpolateMethod
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#define declareIsoSurfaceInterpolateMethod(Type) \
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/*! \brief interpolate Type cellValues, pointValues on iso-surface */ \
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virtual tmp<Field<Type>> \
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interpolate \
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( \
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const GeometricField<Type, fvPatchField, volMesh>& cellValues, \
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const Field<Type>& pointValues \
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) const;
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declareIsoSurfaceInterpolateMethod(scalar);
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declareIsoSurfaceInterpolateMethod(vector);
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declareIsoSurfaceInterpolateMethod(sphericalTensor);
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declareIsoSurfaceInterpolateMethod(symmTensor);
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declareIsoSurfaceInterpolateMethod(tensor);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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